Improvement in propellers



@met @Mire CHARLES KINZLER, OF NEW YORK, N. Y.

Letters Patent No. 102,276, dated April 26, 1870.

IMPROVEMENT IN PROPELLERS.

The Schedule referred to in these Letters Patent and making part of thesame To all whom it may conce/rn Be it known that I, CHARLES KINZLER, ofNew York, 1n the State of New York, have invented certain Improvementsin Propeller-s,A of which the fol- -lowing is a specification.

The nat-ure of my invention consists in the arrangement and combinationof the propeller-hub with the propeller-blade or blades, in such amanner that the center-line of the propeller-hub or the center-line ofthe shaft shall be diagonal with the center-line of the propeller-bladeor blades, and whereby power of the propeller is considerably increased.

In the accompanying drawing- Figure I represents a side elevation of apropeller embodying my invent-ion, and

Figure II is an end view of the same.

'A represents the propeller-blade, consisting of a curved blade woundaround the hub B.

To the outer circumference of this blade a auch, C, is attached,projecting equally on both sides of the blade, and forming thus aregular spiral iianch ou t-he outer edge of the blade.

rlhe hub B is bored larger than the shaft S. It is secured thereto byset-screws, or by any equivalent means which allows of the adjust-nientof the hub, in

relation to the axis of the shaft, from aposition inV which theirrespective axes are concentric to one in which they are inclined to eachother teu degrees,

more or less, thus producing a wabbliug motiou'in ad l dition to theregular motion derived from the rotation of the shaft S.

It will be observed that the hole D through the web of the propeller isin that part thereof which would be at right angles to the axis of theshaft, for the purpose of allowing the passage of water, and therebypreventing any drag whatever when the vessel-is in motion.

Opposite the entering edge r of the propeller, or in a line passingbetween the. forward edge o and the after edge a' of the blade, and onthe opposite side of the propeller-shaft or hub B, a large opening, D,is lnade in the blade A.

By the arrangement of the flanch C on the outer edge of thepropeller-blade or blades, the water is partly confined, and preventedfrom spreading, or from being tlu'own outward, preventing thereby thewashing away of the sides of canals, or disturbing the sand and dirt inthe bottom of canals or shallow rivers.

That .I claim as my invention, and desire to secure by Letters Patent,is

l. The arrangement of the hub B and shaft S, when their respective axesare made adjustable in relation to each other, iu the manner and for thepurpose set forth.

2. In combination with the lblade A, constructed substantially asdescribed, the opening D, for the pur pose specified.

CHARLES KINZLER.

Witnesses: n

HENRY E. ROEDER, ADAM KEPPLER.

